TROJ_DERVEC.SM


 ALIASES:

Backdoor:Win32/Dervec.gen (Microsoft); BackDoor-FFI (McAfee); Backdoor.Trojan (Symantec); Trojan.Win32.Genome.afmun (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Dropper.UGM (FSecure)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size:

207,874 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

06 Jul 2012

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Trojan creates the following folders:

  • %System Root%\ProgramData\Microsoft\Windows\Common
  • %System Root%\ProgramData\Microsoft\Windows

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

Autostart Technique

This Trojan registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\WmiLog

HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\NetSrv

HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\DHCPServices

HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\DHCPServ

HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\UPNPUpdate

HKEY_LOCAL_MACHINE\System\CurrentControlSet\
Services\metSvcService

Other System Modifications

This Trojan modifies the following file(s):

  • %User Profile%\Application Data\Microsoft

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

It deletes the following files:

  • %System Root%\ProgramData\Microsoft\Windows\Olezes.dll
  • %System Root%\ProgramData\Microsoft\Windows\Wnnpno.dll
  • %System Root%\ProgramData\Microsoft\Windows\Sunevj.dll
  • %System Root%\ProgramData\Microsoft\Windows\Sqludf.dll
  • %System Root%\ProgramData\Microsoft\Windows\NetCC365.dll
  • jpg
  • txt
  • %System Root%\ProgramData\Microsoft\Windows\NetCC383.txt
  • %System Root%\ProgramData\Microsoft\Windows\NetCC51.txt
  • %System Root%\ProgramData\Microsoft\Windows\NetCC336.txt
  • %System Root%\ProgramData\Microsoft\Windows\NetCC405.ini
  • %System Root%\ProgramData\Microsoft\Windows\tmp622.txt

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)

It adds the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog\Parameter

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc\Path

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv\Parameter

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices\Parameter

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ\Parameter

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate\Parameter

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService\Parameter

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n\Parameter

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Cmd

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
CCmd

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
ExeCmd

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\hlskz
netsvcs = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog
DisplayName = "WmiLog"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog
Type = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog
ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog
Description = "Provide user experience theme management."

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\WmiLog\Parameter
ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Netucx.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
WmiLog = "idle"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc\Path
WmiLog = "%System Root%\ProgramData\Microsoft\Windows\Netucx.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\kktvt
netsvcs = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv
DisplayName = "NetSrv"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv
Type = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv
ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv
Description = "Enable discovery of UPnP devices on your home network."

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\NetSrv\Parameter
ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Orzefx.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
NetSrv = "idle"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc\Path
NetSrv = "%System Root%\ProgramData\Microsoft\Windows\Orzefx.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\xmale
netsvcs = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices
DisplayName = "DHCPServices"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices
Type = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices
ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices
Description = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServices\Parameter
ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Olezes.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
DHCPServices = "idle"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc\Path
DHCPServices = "%System Root%\ProgramData\Microsoft\Windows\Olezes.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\seutn
netsvcs = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ
DisplayName = "DHCPServ"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ
Type = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ
ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ
Description = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\DHCPServ\Parameter
ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Wnnpno.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
DHCPServ = "idle"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc\Path
DHCPServ = "%System Root%\ProgramData\Microsoft\Windows\Wnnpno.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\hmqrz
netsvcs = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate
DisplayName = "UPNPUpdate"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate
Type = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate
ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate
Description = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\UPNPUpdate\Parameter
ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Sunevj.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
UPNPUpdate = "idle"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc\Path
UPNPUpdate = "%System Root%\ProgramData\Microsoft\Windows\Sunevj.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\xulxm
netsvcs = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService
DisplayName = "metSvcService"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService
Type = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService
ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService
Description = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\metSvcService\Parameter
ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Sqludf.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
metSvcService = "idle"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc\Path
metSvcService = "%System Root%\ProgramData\Microsoft\Windows\Sqludf.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\jpbkl
netsvcs = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n
DisplayName = "AudioLog0n"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n
Type = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n
Start = "2"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n
ErrorControl = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n
ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n
ObjectName = "LocalSystem"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n
Description = "{random characters}"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\AudioLog0n\Parameter
ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\NetCC365.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
AudioLog0n = "header"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc\Path
AudioLog0n = "%System Root%\ProgramData\Microsoft\Windows\NetCC365.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Cmd
Verdec = "MailXX_v2"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
CCmd
Path = "%System Root%\ProgramData\Microsoft\Windows\Netucx.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
WmiLog = "CCmd"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
CCmd
V = "133352"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
ExeCmd
Path = "%System Root%\ProgramData\Microsoft\Windows\Orzefx.dll"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
Svc
NetSrv = "ExeCmd"

HKEY_LOCAL_MACHINE\SOFTWARE\Security\
ExeCmd
V = "133351"

Dropping Routine

This Trojan drops the following files:

  • %System Root%\ProgramData\Microsoft\Windows\Common\Utility.dll
  • %System Root%\ProgramData\Microsoft\Windows\QQlive.exe
  • %User Profile%\Microsoft\Crypto
  • %User Profile%\Crypto\RSA
  • %User Profile%\RSA\S-1-5-18
  • %System Root%\ProgramData\Microsoft\Windows\NetCC141.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC221.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC406.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC100.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC323.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC334.jpg
  • %System Root%\ProgramData\Microsoft\Windows\NetCC426.ini
  • %System Root%\ProgramData\Microsoft\Windows\NetCC293.jpg
  • %System Root%\ProgramData\Microsoft\Windows\Netucx.dll
  • %System Root%\ProgramData\Microsoft\Windows\NetCC232.jpg
  • %System Root%\ProgramData\Microsoft\Windows\Orzefx.dll
  • %System Root%\ProgramData\Microsoft\Windows\NetCC425.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC162.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC333.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC27.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC264.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp87.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp742.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp580.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp418.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp590.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp477.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp405.jpg
  • %System Root%\ProgramData\Microsoft\Windows\CC58.ini

(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://hi.{BLOCKED}u.com/gqpgemcuwd/rss
  • http://hi.{BLOCKED}u.com/iwaxsxg/rss
  • http://hi.{BLOCKED}u.com/ocoijxnwkg/rss
  • http://hi.{BLOCKED}u.com/bwhrpbe/rss
  • http://hi.{BLOCKED}u.com/heiwqiu/rss
  • http://hiphotos.{BLOCKED}u.com/{random path}
  • http://hi.{BLOCKED}u.com/gqpgemc/rss
  • http://hi.{BLOCKED}u.com/wdxiw894/rss
  • http://hi.{BLOCKED}u.com/gpocoi55/rss
  • http://hi.{BLOCKED}u.com/wkgbbw73/rss
  • http://hi.{BLOCKED}u.com/belheiwqiu/rss
  • http://hi.{BLOCKED}u.com/ihnv2386/rss

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.200

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.

Step 2

Restart in Safe Mode

[ Learn More ]

Step 3

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
    • WmiLog
  • In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
    • NetSrv
  • In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
    • DHCPServices
  • In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
    • DHCPServ
  • In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
    • UPNPUpdate
  • In HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
    • metSvcService
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog
    • Parameter
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security
    • Svc
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • Path
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv
    • Parameter
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices
    • Parameter
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ
    • Parameter
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate
    • Parameter
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService
    • Parameter
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n
    • Parameter
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security
    • Cmd
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security
    • CCmd
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security
    • ExeCmd

Step 4

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\hlskz
    • netsvcs = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog
    • DisplayName = "WmiLog"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog
    • Type = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog
    • Start = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog
    • ErrorControl = "0"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog
    • ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog
    • ObjectName = "LocalSystem"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog
    • Description = "Provide user experience theme management."
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\WmiLog\Parameter
    • ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Netucx.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • WmiLog = "idle"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc\Path
    • WmiLog = "%System Root%\ProgramData\Microsoft\Windows\Netucx.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\kktvt
    • netsvcs = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv
    • DisplayName = "NetSrv"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv
    • Type = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv
    • Start = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv
    • ErrorControl = "0"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv
    • ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv
    • ObjectName = "LocalSystem"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv
    • Description = "Enable discovery of UPnP devices on your home network."
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\NetSrv\Parameter
    • ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Orzefx.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • NetSrv = "idle"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc\Path
    • NetSrv = "%System Root%\ProgramData\Microsoft\Windows\Orzefx.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\xmale
    • netsvcs = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices
    • DisplayName = "DHCPServices"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices
    • Type = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices
    • Start = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices
    • ErrorControl = "0"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices
    • ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices
    • ObjectName = "LocalSystem"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices
    • Description = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServices\Parameter
    • ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Olezes.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • DHCPServices = "idle"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc\Path
    • DHCPServices = "%System Root%\ProgramData\Microsoft\Windows\Olezes.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\seutn
    • netsvcs = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ
    • DisplayName = "DHCPServ"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ
    • Type = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ
    • Start = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ
    • ErrorControl = "0"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ
    • ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ
    • ObjectName = "LocalSystem"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ
    • Description = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DHCPServ\Parameter
    • ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Wnnpno.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • DHCPServ = "idle"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc\Path
    • DHCPServ = "%System Root%\ProgramData\Microsoft\Windows\Wnnpno.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\hmqrz
    • netsvcs = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate
    • DisplayName = "UPNPUpdate"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate
    • Type = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate
    • Start = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate
    • ErrorControl = "0"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate
    • ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate
    • ObjectName = "LocalSystem"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate
    • Description = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\UPNPUpdate\Parameter
    • ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Sunevj.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • UPNPUpdate = "idle"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc\Path
    • UPNPUpdate = "%System Root%\ProgramData\Microsoft\Windows\Sunevj.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\xulxm
    • netsvcs = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService
    • DisplayName = "metSvcService"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService
    • Type = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService
    • Start = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService
    • ErrorControl = "0"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService
    • ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService
    • ObjectName = "LocalSystem"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService
    • Description = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\metSvcService\Parameter
    • ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\Sqludf.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • metSvcService = "idle"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc\Path
    • metSvcService = "%System Root%\ProgramData\Microsoft\Windows\Sqludf.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\jpbkl
    • netsvcs = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n
    • DisplayName = "AudioLog0n"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n
    • Type = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n
    • Start = "2"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n
    • ErrorControl = "0"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n
    • ImagePath = "%SystemRoot%\system32\svchost.exe -k netsvcs"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n
    • ObjectName = "LocalSystem"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n
    • Description = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\AudioLog0n\Parameter
    • ServiceDll = "%System Root%\ProgramData\Microsoft\Windows\NetCC365.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • AudioLog0n = "header"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc\Path
    • AudioLog0n = "%System Root%\ProgramData\Microsoft\Windows\NetCC365.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Cmd
    • Verdec = "MailXX_v2"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\CCmd
    • Path = "%System Root%\ProgramData\Microsoft\Windows\Netucx.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • WmiLog = "CCmd"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\CCmd
    • V = "133352"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\ExeCmd
    • Path = "%System Root%\ProgramData\Microsoft\Windows\Orzefx.dll"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\Svc
    • NetSrv = "ExeCmd"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Security\ExeCmd
    • V = "133351"

Step 5

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %System Root%\ProgramData\Microsoft\Windows\Common\Utility.dll
  • %System Root%\ProgramData\Microsoft\Windows\QQlive.exe
  • %User Profile%\Microsoft\Crypto
  • %User Profile%\Crypto\RSA
  • %User Profile%\RSA\S-1-5-18
  • %System Root%\ProgramData\Microsoft\Windows\NetCC141.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC221.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC406.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC100.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC323.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC334.jpg
  • %System Root%\ProgramData\Microsoft\Windows\NetCC426.ini
  • %System Root%\ProgramData\Microsoft\Windows\NetCC293.jpg
  • %System Root%\ProgramData\Microsoft\Windows\Netucx.dll
  • %System Root%\ProgramData\Microsoft\Windows\NetCC232.jpg
  • %System Root%\ProgramData\Microsoft\Windows\Orzefx.dll
  • %System Root%\ProgramData\Microsoft\Windows\NetCC425.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC162.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC333.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC27.html
  • %System Root%\ProgramData\Microsoft\Windows\NetCC264.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp87.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp742.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp580.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp418.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp590.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp477.html
  • %System Root%\ProgramData\Microsoft\Windows\tmp405.jpg
  • %System Root%\ProgramData\Microsoft\Windows\CC58.ini

Step 6

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %System Root%\ProgramData\Microsoft\Windows\Common
  • %System Root%\ProgramData\Microsoft\Windows

Step 7

Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_DERVEC.SM. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 8

Restore deleted/modified files and/or registry entries from backup

*Note: Only Microsoft-related files/keys/values will be restored. If this malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

    • %User Profile%\Application Data\Microsoft

Step 9

Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.

  • %System Root%\ProgramData\Microsoft\Windows\Olezes.dll
  • %System Root%\ProgramData\Microsoft\Windows\Wnnpno.dll
  • %System Root%\ProgramData\Microsoft\Windows\Sunevj.dll
  • %System Root%\ProgramData\Microsoft\Windows\Sqludf.dll
  • %System Root%\ProgramData\Microsoft\Windows\NetCC365.dll
  • jpg
  • txt
  • %System Root%\ProgramData\Microsoft\Windows\NetCC383.txt
  • %System Root%\ProgramData\Microsoft\Windows\NetCC51.txt
  • %System Root%\ProgramData\Microsoft\Windows\NetCC336.txt
  • %System Root%\ProgramData\Microsoft\Windows\NetCC405.ini
  • %System Root%\ProgramData\Microsoft\Windows\tmp622.txt


Did this description help? Tell us how we did.